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deal with the dateline in the SVG renderer. Not yet fully functional.

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This commit is contained in:
ahocevar
2011-10-02 15:40:13 -06:00
parent 49e4547865
commit 868757501f
1 changed files with 22 additions and 9 deletions
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31
lib/OpenLayers/Renderer/SVG.js
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@@ -117,14 +117,16 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
OpenLayers.Renderer.Elements.prototype.setExtent.apply(this,
arguments);
var resolution = this.getResolution();
var left = -extent.left / resolution;
var top = extent.top / resolution;
var resolution = this.getResolution(),
left = -extent.left / resolution,
rightLL = -extent.right,
top = extent.top / resolution;
// If the resolution has changed, start over changing the corner, because
// the features will redraw.
if (resolutionChanged) {
this.left = left;
this.rightLL = rightLL;
this.top = top;
// Set the viewbox
var extentString = "0 0 " + this.size.w + " " + this.size.h;
@@ -133,6 +135,17 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
this.translate(0, 0);
return true;
} else {
if (this.map.baseLayer && this.map.baseLayer.wrapDateLine) {
var oldLeft = this.left * resolution,
newLeft = left * resolution,
worldBounds = this.map.getMaxExtent(),
worldWidth = worldBounds.getWidth(),
oldCenterX = (oldLeft + this.rightLL) / 2,
newCenterX = (newLeft + rightLL) / 2,
worldsAway = Math.round((oldCenterX - newCenterX) / worldWidth);
left += worldsAway * worldWidth / resolution;
console.log(extent.toString());
}
var inRange = this.translate(left - this.left, top - this.top);
if (!inRange) {
// recenter the coordinate system
@@ -505,7 +518,7 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
*/
drawCircle: function(node, geometry, radius) {
var resolution = this.getResolution();
var x = (geometry.x / resolution + this.left);
var x = ((geometry.x - this.featureDx) / resolution + this.left);
var y = (this.top - geometry.y / resolution);
if (this.inValidRange(x, y)) {
@@ -615,7 +628,7 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
*/
drawRectangle: function(node, geometry) {
var resolution = this.getResolution();
var x = (geometry.x / resolution + this.left);
var x = ((geometry.x - this.featureDx) / resolution + this.left);
var y = (this.top - geometry.y / resolution);
if (this.inValidRange(x, y)) {
@@ -681,7 +694,7 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
drawText: function(featureId, style, location) {
var resolution = this.getResolution();
var x = (location.x / resolution + this.left);
var x = ((location.x - this.featureDx) / resolution + this.left);
var y = (location.y / resolution - this.top);
var label = this.nodeFactory(featureId + this.LABEL_ID_SUFFIX, "text");
@@ -833,9 +846,9 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
var resolution = this.getResolution();
var maxX = this.MAX_PIXEL - this.translationParameters.x;
var maxY = this.MAX_PIXEL - this.translationParameters.y;
var x1 = goodComponent.x / resolution + this.left;
var x1 = (goodComponent.x - this.featureDx) / resolution + this.left;
var y1 = this.top - goodComponent.y / resolution;
var x2 = badComponent.x / resolution + this.left;
var x2 = (badComponent.x - this.featureDx) / resolution + this.left;
var y2 = this.top - badComponent.y / resolution;
var k;
if (x2 < -maxX || x2 > maxX) {
@@ -862,7 +875,7 @@ OpenLayers.Renderer.SVG = OpenLayers.Class(OpenLayers.Renderer.Elements, {
*/
getShortString: function(point) {
var resolution = this.getResolution();
var x = (point.x / resolution + this.left);
var x = ((point.x - this.featureDx) / resolution + this.left);
var y = (this.top - point.y / resolution);
if (this.inValidRange(x, y)) {